Shearing mechanism.



C. HOLLY.

SHEARING MECHANISM.

APPLICATION FILED MAY I6. 1916.

1,Q2?,681 u Patented May 29, 1917.

2 SHEETS-SHEET 1.

WITNESSES 5 INVENTOR 1: runs m. Pnomurna. wnsmivo mu. 0. c

C. HOLLY.

SHEARING MECHANISM.

APPLICATION FILED MAY-16. l9I6.

Patented May 29, 1917.

2 SHEETS-SHEET 2. fl -3- llhlllTED STATg PAENT UFl llClEQ CARLOS HOLLY, OF LOCKPORT, NEW YGRK, ASSIGNOR TO F. N. BURT COMPANY,

LIMITED, 0F TORONTO, CANADA, A CORPORATION OF CANADA.

SHEARING MECHANISM.

Continuation in part of application Serial No. 705,512, filed June 24:, 1912.

October 17', 1916. This application filed May 16, 1916.

1 b all whom it may concern:

Be it known that I, CAnLos HOLLY, a citizen of the United States, residing at Lockport, in the county of Niagara and State of New York, have invented certain new and useful Improvements in Shearing Mechanism, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertain-s to make and use the same.

This invention relates to machines for making boxes of paper, card board, and simi lar inaterial, and with respect to its more specific features to shearing mechanism forming part of such machines.

One of the objects of the invention is to provide a practical shearing mechanism adapted to operate efliciently on paper which may be coated with adhesive.

Another object of the invention is to provide mechanism of the character referred to calculated to avoid delays, repairs, etc., which might be engendered by reason of particles of paper and glue adhering to the shearing mechanism.

(Ether objects will be in part obvious and in part pointed out hereinafter,

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the application of which will be indicated in the follow ing claims.

In the accompanying drawings forming part of this specification and wherein similar reference characters refer to similar parts throughout the several views,

Figure 1 is a side elevation of one embodiment of the invention, illustrating the shearing mechanism associated with certain blank feeding and blank folding devices;

F is a view in transverse vertical section of Fig. l; and

Fig. 3 is a view of a shell blank in condition to be operated upon by the shearing mechanism.

This application is mainly a division of applicants application filed June 24, 1912, Serial No. 705,512, and as it has to do more especially with the blank shearing mechanism and the associated parts, only so much of the prior application as may be condu- Specification of Letters Patent.

Patented May 29, 191?.

Patent No. 1,201,822, dated Serial No. 97,772.

cive to a clear understanding of the subjectmatter of the present application, is disclosed in the drawings.

Referring now more specifically to the drawings, the numeral 1 indicates a former or mandrel of rectangular cross section and around which shell blanks of the character illustrated in Fig. 3 are to be folded into rectangular tubular shape, such tubes being denominated shells. Above and below the mandrel 1 are shell blank folding mechanisms indicated generally by the characters 2 and The numeral 4 indicates a blank hold by grippers 5 and 6 and about to be received in certain other feeding and advancing grippers 7 and 8, by means of which latter the blank 4 is carried into position beneath and in contact with the lower face of the mandrel l and above the keeper or plate 10, which latter is spring-pressed toward the mandrel and will retain the blank 4 on the mandrel in position to be folded therearound with its opposite ends joined by the mechanisms 2 and 3. The shell blanks, one of which is illustrated in Fig, 8, are formed from a body web and a cover web, the body web being of relatively heavy material, while the cover web is of a thinner material, and be of an ornamental character. Blanks are cut from the respective webs, and a blank of one vweb is superposed with a blank of the other web, with the interposition of adhesive so as to form the shell blank composed of the cover blank 11 and the body blank 12. Suitable scores 13, preferably made by removing the surface material of the body blank, enable it to be folded readily along the scored lines, and readily accommodate the cover at the inner corners of the shell. The cover blank 11 extends at one side, as at 14, beyond the body blank, and when the folding mechanismoperates to form the shell around the mandrel 1, the sides of the body blank are superposed, these sides having been beveled and coated with adhesive so as to form a secure joint in the folded article. In the folded article, the side of the cover blank 11 is folded down onto the underlying body blank so as to, as far as possible, conceal the joint in the body blank, and in order that a neat article may be produced with the side edge of the cover blank occupying a predetermined position on the shell, as, for instance, being directly opposite a corner of the shell, the side 14 extending beyond the adjacent side of the body blank, has to be taken into consideration. Ordinarily in producing the shell blank the web or cover blank is slightly wider than is required, and its edge may not be uniform. Hence in order to produce a svmmetrical. and perfect article with the side edge of the cover blank occupying the definite position referred to, applicant trims off a strip from the projecting edge 14: of the cover blank, the line of out being such that the resultant edge will occupy the predetermined position in the folded article.

The shell blank, referred to, having been fed into position between the plate 10 and the mandrel 1, as above described, the side 14 0f the cover blank is trimmed off, while the shell blank is in position to be folded. It may be noted here that the cover blank 12 is coated throughout its entire surface with adhesive, so that the face of the projecting portion 14 is covered with glue, as at 15. The trimming of the cover blank is effected by a pair of cooperative shear blades.

In the present embodiment the numeral 16 indicates a shear blade, journaled to oscillate on a shaft 17, in turn rotatably mounted in a bearing or sleeve 18 at the upper end of a bracket 19 fixed at its lower end. to the frame of the machine. The inner end of the shaft 17 has a head 20, and the blade 16 is journaled on the shaft 17 between the head 20 and the hub of a rotatable shear blade 21 fixed to the shaft 17. The blade 16 is held in stationary horizontal position when codperating with the blade 21 to trim the blank, and thereafter is lowered to better accommodate the feed of the next blank to trimming position, the blade 16 again returning to horizontal position before the trimming of the second mentioned blank. The oscillation of blade 16 is effected by a connecting rod 22 pivoted to blade 16, and to an arm 23 of a rock shaft 2 1, in turn having an arm 25, cooperating with a cam 26 on the inner face of a mutilated gear 27 hereinafter mentioned. It may be noted here that in the prior application before mentioned, the blade corresponding to the shear blade 16 is rigidly mounted, so that it does not have the oscillatory movement of the blade of this case. Other than this, the constructions are the same.

The shear blade 21 preferably has a longitudinally extending arcuate cutting edge 28, provided by the side face 50 and the advance face-51 and isintermittently rotated to cooperate with the blade 16 to shear the blank. Preferably the blade 21 makes a -complete revolution and then rests in the position shown in Fig. 1, and while in said positlon of restany partlcles of blank material or glue which may have adhered to the rotary blade, as for instance to its advance face, are removed prior to the next succeeding shearing operation. In the present embodi ment, the intermittent rotation of the blade 21 is effected through the instrumentality of a crank 29, rotary motion being communicated to the crank 29 by means of a link 30,'in turn pivoted to a second crank 31 car ried by a mutilated pinion 32 driven by the mutilated gear 27, the latter being rotated by a shaft 33 driven froma suitable source of power. The cranks 29 and 31 are parallel to each other, and the link 30 has an extended portion 3a which is also connected to a third crank 35 parallel to the cranks 29 and 31, the axes of the three cranks being relatively eccentically disposed. By such construction, when the pinion 32 is rotated, the shear blade 21 is also rotated synchronously therewith. The relatively large mutilated gear 27 has its teeth adapted to mesh with the teeth of the mutilated pinion 82, and the relative number of the teeth of the pinion and gear is such that the pinion makes a complete revolution for something less than half a revolution of the gear; the smooth edges of the pinion and gear conforming for the remainder of a complete revolution of the gear to lock the pinion against rotation and consequently lock the rotary shear blade against movement during such interval.

As the shears operate to sever material which is provided with moist glue, there is a tendency for the severed material to stick to the shearing blade, and for the lue to dry on said blade. In order to obviate, as far as possible, such disadvantages, means are provided for removing from the blade such particles as may adhere thereto, and in the present embodiment a scraper is adapted to cooperate with the movable blade 21 to accomplish this result, and preferably it cooperateswith said blade during an interval of rest of said blade. The scraper or clearer comprises an arm 36 pivoted to an oscillatory carrier or rock lever 37, the latter being pivotally connected by a link 38 to a pin 39 on the mutilated gear 27, and the pivotal axis of the carrier being eccentric to the rotary axis of the blade 21. As the shear blade 21 comes to rest, the arm 36 moves toward the axis of said blade, and the lower edge of the scraper arm will be applied to the edge of the blade 21 at a predetermined point on the blade, near theaXis of the latter, whereupon movement of the carrier 37 in the opposite direction will cause the arm 36 to scrape the blade longitudinally thereof, thus removing any particles of glue or paper which may have adhered thereto. The scraping of the blade is effected preferably while it is at rest. In order: that the scraper may efiectively contact the blade 21, a yielding means in the shape of a spring 40 connected to a tail ll of the scraper 36 and to the lever 37 is provided, and is adapted to cause pressure between the scraper and its cooperative blade during the scraping operation. Also the spring permits the scraper 36 to follow the arcuate contour of the blade 21 which may not conform to the arcuate path of the lever 37. i

In order to assist in the removal of glue and particles of paper material from the blade 21, provision is made for moistoning said blade at places where the glue or particles are likely to adhere thereto, so that the same may be more readily removed by the scraper. To this end, a nozzle 42 is disposed to discharge liquid, as water, on the edge 28 of the blade 21, this nozzle forming the termination of a pipe 4-3, which latter may be connected to av liquid supply or reservoir 44 at an appropriate point to supply liquid to the nozzle 4-9.. Not very much liquid is required to accomplish the result sought, and ordinarily a valve 41-5 is provided somewhere in the liquid circuit to control the flow of liquid from the nozzle. By proper setting of the valve, the liquid may be caused to flow onto the blade drop by drop. As the carrier 37 moves longitudinally of the blade 21, the liquid drops from the longitudinally movable nozzle 42 onto the blade 21 at one or more points, so that the clearing of the blade from particles of glue and paper is more readily accomplished.

Thus by the above described construction are accomplished, among others, the objects hereinbefore mentioned.

As many changes could be made in the above construction and many apparently widely difierent embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

It is also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention lerein described, and all. statements of the scope of the invention, which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In an apparatus of the character described, in combination, a p ii of cooperative shear blades, a scraper adapted to cooperate with one of said blades to remove particles adhering thereto, and yielding means adapted to cause pressure between said scraper and its cooperative blade during the scraping operation.

2. Shearing mechanism comprising, in combination, an intermittently rotatable shear blade, and a scraper adapted to cooperate with said blade during an interval of rest of the latter to remove particles thercfrom.

3. Shearing mechanism comprising in combination, an intermittently rotatable shear blade, a scraper adapted to cooperate with said blade during an interval of rest of the latter to remove particles therefrom, and yielding means adapted to cause pressure between said scraper and said blade during the scraping operation.

4. Shearing mechanism combination, an intermittently rotatable shear blade, a scraper, a carrier for said scraper, and means adapted to cause said carrier to dispose said scraper on said blade at a predetermined point and thereafter move the same longitudinally thereof.

5. Shearing mechanism comprising, in combination, an intermittently rotatable shear blade, a scraper, a carrier fcr said scrap r, means adapted to cause said carrier to dispose said scraper on said blade at a. predetermined point and thereafter move the same longitudinally thereof, and a spring connected to said scraper to press the same toward said blade.

6. In an apparatus of the character described, in combination, a pair of coloperative shear blades, means adapted to intermittently rotate one of said blades, a carrier pivoted eccentrically of the axis of said blade, a scraper on said carrier, and means adapted to oscillate said carrier to said scraper to contact said blade at a predetermined point and be thereafter moved on said blade longitudinally of the latter.

7. In an apparatus of the character described, in combination, a pair of coiuperative shear blades, means adapted to intermittently rotate one of said blades, a carrier pivoted eccentrically of the axis of said blade, a scraper on said carrier, means adapted to oscillate said carrier to cause said scrap r to contact said blade at a predetermined point and be thereafter moved on said blade longitudinally of the latter, and yield ing means connected to said scraper adapted to press the same against said blade during scraping.

8. In an apparatus of the character described, in combination, a pair of coiipera tive shear blades, means adapted to intermittently rotate one of said blades, said rotatable blade having an arcuate cutting edge, a carrier pivoted eccentrically of the axis of said blade, a scraper on said carrier, and means adapted to oscillate said carrier to cause said scraper to contact said blade at a predetermined point and moved on said blade longitudinally of the latter.

9. In an apparatus of the character described, in combination, a pair of c06perative shear blades, means adapted to intercomprising, in

be thereafter mittently rotate one of said blades, said rotatable blade having an arcuate cutting edge, a carrier pivoted eccentrically of the axis of said blade, a scraper on said carrier, means adapted to oscillate said carrier to cause said scraper to contact said blade at a predeter mined point and be thereafter moved on said blade longitudinally of the latter, and yielding means connected to said scraper adapted to press the same against said blade during scraping.

10. Shearing mechanism con'iprising, in combination, a rotatable shear blade, three parallel cranks eccentric-ally disposed relatively to each other, means adapted to intermittently rotate one of said cranks, a link connected to each of said cranks, one of said cranks being adapted to rotate said shear blade, a rock lever, a scraper carried by said lever adapted to move longitudinally on said shear blade, and means adapted to rock said lever when said blade is at rest.

11. Shearing mechanism comprising, in combination, a rotatable shear blade, three parallel. cranks eccentrically disposed relatively to each other, means adapted to intermittently rotate one of said cranks, a link connected to each of said cranks, one of said c'anks being adapted to rotate said shear blade, a rock lever, a scraper carried by said lever adapted to move longitudinally on said shear blade, and means operative by said first mentioned means adapted to rock said lever when said blade is at rest.

12. In an apparatus of the character described, in combination, a pair of cooperative shear blades, and means adapted to remove from one of said blades particles adhering thereto comprising a blade-scraper and a blade-moistener movable longitudinally of the blade.

13. Shearing mechanism comprising, in combination, an intermittently rotatable shear blade, a rock lever, a scraper carried by said lever adapted to remove particles from the blade, a nozzle carried by said lever disposed to deliver liquid on said blade, and a source of liquid supply for said nozzle.

14. Shearing mechanism comprising, in combination, a rotatable shear blade, three parallel cranks eccentrically disposed relatively to each other, means adapted to intermittently rotate one of said cranks, a link connected to each of said cranks, one of said cranks being adapted to rotate said shear blade, a rock lever, a scraper and a nozzle carried by said lever adapted to move longitudinally of said shear blade, means adapted to rock said lever when said blade is at rest, and a source of liquid supply for said nozzle.

15. In an apparatus of the character described, in combination, a pair of cooperative shear blades, means adapted to intermittently rotate one of said blades, means adapted to hold the other blade stationary during cutting cooperation With said rotatable blade, and means adapted to oscillate said other blade relative to the cutting plane between the intervals of rotation of said rotatable blade. 7 V

16. In an apparatus of the character de scribed, in combination, a shear blade, means movable longitudinally of said blade adapted to moisten said blade, and a scraper movable longitudinally of said blade adapted to remove particles adhering thereto.

17. In an apparatus of the character described, in combination, a shear blade comprising two faces intersecting in. cutting edge, a scraper movable longitudinally of said edge over one of said faces adapterv to remove particles adhering thereto, and means movable longitudinally of said blade adapted to moisten said last mentioned face.

18. In anapparatus of the character described, a. shear blade comprising two faces intersecting in a cutting edge, means adapted to rotate said blade to effect shearing, a scraper movable longitudinally of the advance face of said blade adapted to remove particles adhering thereto, and means adapted to moisten said advance face.

19. In an apparatus of the character described, a shear blade comprising two faces intersecting in a cutting edge, means adapted to rotate said blade to effect shearing, a

scraper reciprocal longitudinally of the advance face of said blade adapted to remove particles adhering thereto, and means adapted to moisten said advance face.

20. In an apparatus of the character described, a shear blade comprising two faces intersecting in an arcuate cutting edge, means adapted to rotate said blade to effect shearing, a spring pressed scraper reciprocal longitudinally of the advance face of said blade adapted to remove particles adhering thereto, and means adapted to moisten said advance face.

In testimony whereof I affix my signature in the presence of tWo Witnesses.

' CARLOS HOLLY.

Witnesses:

L. E. PALMER, A. H. Daron.

Copies of this patent may be obtained. for five cents each, by addressing the Commissioner of ratents, Washington, D. C. 

